Go to Cheats->Options and enter the following passwords:

Unlock Full Stats:
Allthebest

Unlock Perfect Manual:
Frontandback

Always Special:
Jammypack

Unlock Perfect Rail:
Balancegalore

Unlock Unlimited Focus:
Shellshock

Unlock Travis Barker:
Plus44

Unlock Inkblot Deck:
Birdhouse

Unlock Jason Lee:
Notmono

Unlock Kevin Staab:
Mixitup

Unlock Mascot:
Manineedadate

Unlock Nerd:
Wearelosers

Unlock Anchorman:
Newshound

Unlock Big Realtor:
Shescaresme

Unlock Bum:
Enterandwin

Unlock Twin:
Badverybad

Unlock Zombie:
Suckstobedead

Unlock Christian Hosoi:
Hohohosoi

Unlock Colonel and Security Guard:
Militarymen

Unlock Dad and Skater Jam Kid:
Strangefellows

Unlock Photography Girl and Filmer:
Themedia

Unlock Skinny Real Estate Agent:
Sellsellsell

Specials unlocked and in 'Players Special List' and set as owned in Skate shop:
Yougotitall a;;

All Decks unlocked and free except for Inkblot Deck and Gamestop Deck:
Needaride

Xbox Live Achievements

Secret Area Found - GamerScore 5:
Find your first Secret Area.

First Sick Goal - GamerScore 5:
Completed a goal on Sick difficulty setting.

School Unlocked - GamerScore 10:
Unlock the School.

Scored over 1,000,000 points! - GamerScore 10:
Scored over 1,000,000 points.

Funpark Unlocked - GamerScore 10:
Unlock the Funpark.

Skate Park Unlocked - GamerScore 10:
Unlock the Skate Park.

Slums Unlocked - GamerScore 10:
Unlock the Slums.

Outta the Houses - GamerScore 10:
Escape suburban life and explore the world.

Played Xbox Live - GamerScore 10:
Play an online game.

Training Complete - GamerScore 10:
Complete training.

Song Pro Challenge - GamerScore 10:
Find Daewon and beat his challenge.

Rod Pro Challenge - GamerScore 10:
Find P-Rod and beat his challenge.

Williams & Dollin Pro Challenge - GamerScore 10:
Find Stevie and Dustin and beat the challenge.

Nyjah and Lyn-Z Pro Challenge - GamerScore 10:
Find Nyjah and Lyn-Z and beat the challenge.

Vallely Pro Challenge - GamerScore 10:
Find Mike V and beat his challenge.

Sheckler Pro Challenge - GamerScore 10:
Find Ryan and beat his challenge.

Margera Pro Challenge - GamerScore 10:
Find Bam and beat his challenge.

Mullen Pro Challenge - GamerScore 10:
Find Rodney and beat his challenge.

Break 15 Bones in One Bail - GamerScore 10:
Break 15 bones in one bail.

Burnquist Pro Challenge - GamerScore 10:
Find Bob and beat his challenge.

Factory Unlocked - GamerScore 10:
Unlock the Factory.

Suburbia Classic Beaten at Sick - GamerScore 15:
Complete Suburbia Classic on Sick difficulty setting.

Fun Park Classic Completeen at Sick - GamerScore 15:
Complete Fun Park Classic on Sick difficulty setting.

Capitol Classic Completeen at Sick - GamerScore 15:
Complete Capitol Classic on Sick difficulty setting.

Factory Classic Completeen at Sick - GamerScore 15:
Complete Factory Classic on Sick difficulty setting.

Main St Classic Completeen at Sick - GamerScore 15:
Complete Main St Classic on Sick difficulty setting.

School Classic Completeen at Sick - GamerScore 15:
Complete School Classic on sick difficulty setting.

Skate Classic Completeen at Sick - GamerScore 15:
Complete Skate Classic on Sick difficulty setting.

Slums Classic Completeen at Sick - GamerScore 15:
Complete Slums Classic on Sick difficulty setting.

50 Games Online - GamerScore 15:
Complete 50 games online.

100 Games Online - GamerScore 20:
Complete 100 games online.

The Daily Grind - GamerScore 20:
Grind for 140,000 total feet.

Nice combo! - GamerScore 20:
Land over 500,000 point combo.

Hang Time - GamerScore 20:
14,000 seconds of air time.

Manual Master - GamerScore 20:
Manualed for 140,000 feet.

Hit 50% of the Gaps - GamerScore 20:
50 percent of the gaps found.

All Pro Challenges Completed - GamerScore 20:
You did everything the pro's challenged you to do.

Sick Classic Goals - GamerScore 30:
Complete All the classic goals on Sick difficulty setting.

Sick Chalk Challenges - GamerScore 30:
Complete All the goals on Sick difficulty setting.

Hit All of the Gaps - GamerScore 35:
Skated the world and found every gap.

Full Stats - GamerScore 50:
Get every stat maxed.

You Made it Into Project 8 - GamerScore 50:
Cracked the top 8.

Beat a Developer - GamerScore 50:
Win a skate session against a member of the Project 8 development team, or someone who Already has.

You Made it to Spot 4! - GamerScore 75:
Cracked the top 4

Ranked Number 1! - GamerScore 100:
You are the number one skater on Project 8.